How to set relative priority for tasks?

I see that there is a way to set a priority type (eg: critical) for tasks (paid plans only), but is there a way to set the relative priority of tasks? We need a way to assign the order that tasks should be worked on.

If you have your tickets within a milestone you can order
prioritize the tickets per user, but this is only available with
the milestone not project. You'll see a button labeled "prioritize"
in the right hand column of the milestone view. Let us know if you
have any other questions.